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| All Patents in class 76/5.6 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,253,292 | Jan. 15, 1918 | W.A. Smith | Dolly Mechanism for Drill Sharpeners | |
 | 1,306,106 | Jun. 10, 1919 | J. Ditson | Drill-steel-pinning device | |
| 1,567,705 | Dec. 29, 1925 | J. Burt | Lathe | ||